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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 319 · 40 sums
TalentJR

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

NameDateTime takenScore ___ / 40
  1. 1.? + 1 = 4
  2. 2.1 + 1 + 15 =
  3. 3.4 + 1 =
  4. 4.There are 9 green flowers and 8 yellow flowers. How many flowers are there in all?
  5. 5.Lakshmi has 3 mangoes and gets 14 mangoes more. How many mangoes does Lakshmi have now?
  6. 6.Gurpreet has 4 flowers and gets 13 flowers more. How many flowers does Gurpreet have now?
  7. 7.Joseph has 2 bananas and gets 3 bananas more. How many bananas does Joseph have now?
  8. 8.There are 5 green crayons and 8 red crayons. How many crayons are there in all?
  9. 9.There are 4 white crayons and 4 red crayons. How many crayons are there in all?
  10. 10.Saanvi has 14 balls and gets 4 balls more. How many balls does Saanvi have now?
  11. 11.There are 4 red kites and 15 white kites. How many kites are there in all?
  12. 12.There are 2 red beads and 18 white beads. How many beads are there in all?
  13. 13.18 + 1 =
  14. 14.10 + ? = 19
  15. 15.Diya has 13 flowers and gets 4 flowers more. How many flowers does Diya have now?
  16. 16.8 + 9 =
  17. 17.There are 7 yellow kites and 10 blue kites. How many kites are there in all?
  18. 18.17 + 1 =
  19. 19.2 + 6 + 7 =
  20. 20.Riya has 7 kites and gets 1 kite more. How many kites does Riya have now?
  21. 21.6 + 8 + 1 =
  22. 22.6 + 9 =
  23. 23.19 + 1 =
  24. 24.11 + 2 =
  25. 25.? + 3 = 7
  26. 26.18 + 2 =
  27. 27.17 + 2 =
  28. 28.1 + 8 + 3 =
  29. 29.? + 3 = 11
  30. 30.6 + 1 + 3 =
  31. 31.4 + 14 =
  32. 32.2 + 5 + 5 =
  33. 33.Rohan has 9 balloons and gets 10 balloons more. How many balloons does Rohan have now?
  34. 34.Saanvi has 13 pencils and gets 4 pencils more. How many pencils does Saanvi have now?
  35. 35.8 + 4 + 2 =
  36. 36.? + 5 = 12
  37. 37.3 + ? = 16
  38. 38.? + 4 = 20
  39. 39.Dev has 14 pencils and gets 2 pencils more. How many pencils does Dev have now?
  40. 40.2 + 7 + 7 =

Answer key

  1. 3
  2. 17
  3. 5
  4. 17
  5. 17
  6. 17
  7. 5
  8. 13
  9. 8
  10. 18
  11. 19
  12. 20
  13. 19
  14. 9
  15. 17
  16. 17
  17. 17
  18. 18
  19. 15
  20. 8
  21. 15
  22. 15
  23. 20
  24. 13
  25. 4
  26. 20
  27. 19
  28. 12
  29. 8
  30. 10
  31. 18
  32. 12
  33. 19
  34. 17
  35. 14
  36. 7
  37. 13
  38. 16
  39. 16
  40. 16

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